Ukrainian power workers restored electricity to nearly 1 million people in Kyiv and other areas, as officials braced for further Russian air strikes that have already severely damaged power generation ...

The rings of DNA inside mitochondria are inaccessible to these techniques, which means that precise edits to mitochondrial DNA (mtDNA) remain frustratingly out of reach. “Mitochondria missed the ...

When Storm Amy battered the Scottish Highlands in early October, it tore through a salmon farm's sea pens, releasing around 75,000 fish into open water in Loch Linnhe. The scale of the escape is ...

Did a collision with a giant asteroid or comet change the shape of life on Earth forever? It is widely agreed that such an object -- 10 kilometers across -- struck just off the coast of the Yucatan ...

Fentanyl and other opioids have fueled the worst drug crisis in U.S. history. In recent years, fatal overdose numbers have become defined by illicit fentanyl, an extremely lethal synthetic opioid, ...

October 31, 2025 • This year, with Congress in a stalemate about subsidies, Affordable Care Act marketplace consumers will need to be more informed than ever to navigate their health coverage choices.